/Engine/Plugins/Animation/MLDeformer/MLDeformerFramework/Source/MLDeformerFramework/Public/MLDeformerModel.h
Check whether this model currently has a training mesh setup or not. For example if there is say a GeometryCache as target mesh, it could check whether that property is a nullptr or not.
Returns true when the training target mesh has been selected, otherwise false is returned.
virtual bool HasTrainingGroundTruth() const